Antitrust
The Rise of the Mutual Fund Is Reducing Corporate Competition and Hurting Consumers
Mutual funds have become large shareholders in most public U.S. firms. The resulting overlaps in ownership are boosting corporate profits but harming consumers, according to a new study co-authored by Florian Ederer of Yale SOM.

Why ‘Breaking Up’ Big Tech Probably Won’t Work
Instead, argues Yale SOM’s Fiona Scott Morton, the government should exercise its regulatory powers to promote competition.
Three Questions: Prof. Florian Ederer on ‘Killer Acquisitions’
A recent lawsuit alleged that a billionaire investor bought the rights to a new drug just to eliminate a potential competitor. We asked Yale SOM's Florian Ederer to explain why a "catch-and-kill" merger can be damaging and what to do about the phenomenon.
Prof. Fiona Scott Morton Outlines Fixes for Healthcare Markets in Congressional Testimony
Prof. Scott Morton called a private healthcare system without competitive pressure “the worst of both worlds” in terms of costs.
Is Antitrust Enforcement Out of Date?
U.S. antitrust laws, Yale SOM’s Fiona Scott Morton says, were written when new technology meant “typewriters and buggy whips and bicycles.” She assembled a group of economists and legal scholars to examine areas in which enforcement is out of sync with a changing economy.
Do Companies Buy Competitors in Order to Shut Them Down?
A study co-authored by Yale SOM researchers Florian Ederer and Song Ma suggests that “killer acquisitions” by pharmaceutical companies are potentially limiting the number of new treatments available.
How Do You Enforce Antitrust Law in a Global Marketplace?
Professor Fiona Scott Morton, the former chief economist in the Antitrust Division of the U.S. Department of Justice, on the state of global competition law.
Is antitrust law keeping up?
Can laws created to rein in the monopolies of the industrial age still work in the information age? After spending a year as the top antitrust economist at the U.S. Department of Justice, Professor Fiona Scott Morton describes the state of antitrust regulation today.